Perhaps you should try some spelling variations:
"dung datat code slippers" » "dung dat code slippers"
"duong van code snippets" » "duong va code snippets", "luong va code snippets", "dang van code snippets", "duong van de snippets", "duong van hoe snippets", "duong van cong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("duong van code snippets") or ("dung datat code slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong van code snippets") OR ("dung datat code slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong van code snippets ) or ( dung datat code slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong van code snippets") or ("dung datat code slippers"))) or ("locating bug code snippets"))*.